Adjusting device for rifling guns or cannon



(No Model.) 3 Sheets-Sheet 1.

M. F. SMITH.

ADJUSTING DEVICE FOR RIPLING GUNS 0R CANNON.

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(No Model.)

M. E. SMITH. ADJUSTING DEVICE FOR RIFLING GUNS OR CANNON.

Patented June 13,1893.

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(No Model.)-

3 Sheets-Sheet 3. M. F. SMITH. I ADJUSTING DEVICE FOR RIFLING GUNS 0R CANNON;

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Nrrn MORRIS F. SMITH, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TO THE WILLIAM ORAMP & SONS SHIP AND ENGINE BUILDING COMPANY, OF PENNSYLVANIA. I

ADJUSTING DEVICE FOR RI FLING GUNS OR CANNON.

SPECIFICATION forming part of Letters Patent No. 499,683,-dated June 13, 1893. Application filed June 30,1892. SerialNo. 438,494- (No model.)

To all whom it may concern: the pinion g, and the tool spindle D, causing Be it known that I, MORRIS F. SMITH, a citithe cutting tool carried by the latter to graduzen of the United States, residing in the city ally turn as it is fed along and thus effect the of Philadelphia, county of Philadelphia, and desired riding of the gun.

State of Pennsylvania, have invented a new The turretB comprises a body 1) within and Improved Device for Rifling Guns or which is a sleeve O, one end forming prefer- Oannon, of which the following is a speoificaably an integral part of a combined locking tion, reference being had to the accompanyand ratchet wheel F, the portion f of which ing drawings, and to the letters of reference is provided with a series of locking notches 10 marked thereon. with one of which engages a sliding boltvl The principal object of my invention is to guided in an extension I of the fixed portion provide rifling machines with an adjusting b. The portion f of this wheel F is provided device of simple character, by means of which with a series of ratchet teeth, with one of the gun may be accurately adjusted on its which engages a detentk, guided in the pro- 5 axis to accommodate the riding tool, or the jecting portion K of the fixed frame I), and tool adjusted on its axis as desired. under the action of a coiled compression In the accompanying drawings:-Figure 1, spring is which always tends to keep it in is a plan view of a gun rifling machine havcontact with one or the other of the ratchet ing my invention applied thereto. Fig. 2, is teeth.

20 a side elevation of the same. Fig. 3, is an ele- Pivoted at Z to an extension of the portion vation of the turret of the machine on asomeb is a handled lever L, one arm of which is what larger scale. Fig. 4, is a View of the forked at Z, and is adapted to engage with a same looking in the direction of the arrow, pin Z projecting from the locking bolt 1', and Fig. 3, and showing the gun in section. Fig. being so arranged that on the movement of 5 5, is a sectional View on the line occc Fig. 3, the lever in the direction of the arrow Fig. 4,

and Fig. 6, is a sectional view on the line yy the locking bolt 1', will be drawn up out of Fig. 4. Fig. '7, is a side elevation showing the engagement with the notches of the portion adjustment in the tool and not in the turret. f and the further movement will effect a par- Fig. 8, is a perspective view of the tool, and tial rotation of the body I), and the sleeve F 3 Fig. 9, an enlarged sectional view of the tool. by reason of the engagement of the detent 7c The machine in general comprises a bed A with one of the ratchet teeth of the portion f. on which is suitably supported the gun X, This adjustment is for the purpose of turnthe open end of said gun being held in a turing the gun to present to the tool a fresh path ret B. On the bed is mounted a carriage O, to be rifled, and the movement of the parts is 35 carrying the tool spindle D, and the carriage transmitted to the gun by a series of clamps is fed along gradually as the cutting proceeds m, carried by ring M on the outer end of the by a screw shaft d, the outer end of which sleeve F, the end of the gun being grooved carries a gear cl meshing with a pinion e on and notched as usual for the engagement of the main driving shaft E. the clamps.

4 On the tool spindle within the carriage is a In a great many cases it has been found pinion g which meshes with the rack g cardesirable to give to the gun a very slight turn ried on a slide G suitably guided in ways on on its axis independent of the movement of the upper face of the carriage C, and from the lever L or the parts to which it isconthis slide G, projects a stud carrying an antinected, this adjustment being particularly 45 friction roller h, adapted to the slot of the desirablein the eventof the breaking or wear- 5 guiding or rifling cam H, so that as the caring of the cutting tool, or when for any other riage is moved along the length of the mareason a fresh tool has to be employed. To chine by the screw this guiding cam causes effect this adjustment, I provide the ring .1 the transverse movement of the rack and with two projections n n as shown in Fig. 5,

5 Slide, and thus effects the gradual rotation of and through these projections extend screws I00 p, the inner ends of which bear upon a stud or stop n projecting from the sleeve 0, so that the turning of these screws to a greater or less extent will eifect a very slight axial movement to the gun with respect to the sleeve, and an adjustment of the utmost nicety may be readily effected, the screws 0 which united the sleeve 0' to the ring M passing through segmental slots which will permit of this slight movement. The same end can be attained by efiecting the adjustment in and through the tool, as shown in Figs. 7, 8 and 9. In the modification illustrated in these figures the tool is divided into two parts D and D which are provided with flanges d d which are united together by bolts d which pass through segmental slots in said flanges, as shown, thus permitting, upon loosening of the nuts on said bolts, of slight axial movement of the tool so as to effect the desired adjustment.

. assess relatively to the turret, substantially as and for the purpose specified.

In testimony whereof I have hereunto subscribed my name, at Philadelphia, on this 25th day of April, A. D. 1892.

MORRIS F. SMITH.

Witnesses:

GEo. W. REED, GHAs. O. COLLIER. 

